CHARACTERISTICS OF SOILS - Introduction to Soft Soil Geotechnique: Content, Context and Application - page 33

application 2.4
Explain which soil is characterised by CMH.
application 2.5
According to standard testing of a semi-saturated soil sample, the total weight
W , the bulk volume V and, after drying, the solids weight W s and its volume V s are
determined. Is this sufficient to determine also the saturation degree? If yes,
describe how it is related to these measurements.
application 2.6
A semi-saturated soil sample has been tested in the laboratory; the following
results are obtained: Bulk mass 160 gram, bulk volume 125 cm 3 , dry mass of 110
gram and the net volume of solids 65 cm 3 . What was the porosity n , the water
content w , and the saturation degree s ? What is the specific solid's gravity G s , and
give an indication of the organic content. Then give an indication of the type of soil
we are dealing with.
application 2.7
What are the answers on the previous question if bulk mass 193 gram, bulk
volume 100 cm 3 , dry mass of 158 gram and the net volume of solids 60 cm 3 ?
application 2.8
A soil sample is tested. The site condition is porosity n = 0.52 and saturation s =
0.85. The liquidity limit is found for n = 0.55 and s = 0.88, and the plastic limit for
n = 0.5 and s = 0.8. The specific gravity is G s = 2.65. Is the sample clay or silt, and
what is the range of its undrained strength?
Figure 2.7
application 2.9
An embankment consists of a rectangular sand core covered by an impermeable
clay shell (Fig 2.7). The sand is neither dry nor completely wet. A certain amount
of water (1 m 3 per 1 m embankment length) is stored in the core by pumping water